User Manual

Chapter 3 Appendix
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3
× Scanning Results Are Not as Expected
If there is a problem with the scanning result (for example, the scanned image is
not clear, or the image is striped or dirty) the probable causes are incorrect ISIS/
TWAIN driver settings or a problem with the scanning unit inside the scanner.
Scanning results can also become skewed if the ISIS/TWAIN driver has not been
installed correctly, or the application in use does not support ISIS/TWAIN driver
functions.
Symptoms
Problem
Solution
The scanned image is too dark (or faint).
The Brightness setting is set incorrectly.
If the image is dark, click the [Brightness] tab in the Properties for
Canon DR-3010C dialog box → drag the <Brightness> slider to the
right to increase the Brightness setting, or if the image is faint, drag
the <Brightness> slider to the left to decrease the Brightness setting.
Symptoms
Problem
Solution
Text or images on the rear side of your document appear in the
scanned image.
The Brightness setting is too low, or the paper is too thin.
Click the [Brightness] tab in the Properties for Canon DR-3010C
dialog box → drag the <Brightness> slider to the right to increase
the Brightness setting. If the paper is too thin, make a copy of the
documents and then scan the copy. Alternatively, click the [Image
processing] tab in the Properties for Canon DR-3010C dialog box →
select the [Prevent Bleed Through / Remove Background] check
box.
Symptoms
Problem
Solution
Double-sided scanning is not possible.
The Scanning Side drop-down list is set to ’Simplex’.
Click the [Basic] tab in the Properties for Canon DR-3010C dialog
box → select [Duplex] from the Scanning Side drop-down list.
Symptoms
Problem
Solution
The scanned image is skewed.
The document has been fed at an angle (skew).
Use the document guide adapter to prevent document skew. Click
the [Basic] tab in the Properties for Canon DR-3010C dialog box →
select the [Deskew] check box.
Symptoms
Problem
Solution
Lines, smudges, or dirt appear on the scanned image.
The scanning glass or rollers inside the scanner are dirty.
Clean the scanning glass and rollers. If lines still appear on the
image even after cleaning the scanning glass and rollers, the
scanning glass inside the scanner may be scratched. Contact your
local authorized Canon dealer or service representative.
Symptoms
Problem
Solution
There are abnormalities in the image.
The scanning glass or rollers inside the scanner may be dirty.
Clean the scanning glass and rollers. If there are still abnormalities
in the image even after cleaning the scanning glass and rollers, the
scanning glass inside the scanner may be scratched. Contact your
local authorized Canon dealer or service representative.
Symptoms
Problem
Solution
The size of the document could not automatically be detected.
The scanning glass or rollers inside the scanner may be dirty.
Clean the scanning glass and rollers. If the auto-detection of the
paper size fails even after cleaning the scanning glass and rollers,
the scanning glass inside the scanner may be scratched. Contact
your local authorized Canon dealer or service representative.
Symptoms
Problem
Solution
The scanned image is abnormal in some applications.
A function not supported by the application was used.
Some applications do not support functions, such as auto-detection
of the paper size. Scanning documents with an application such as
this will result in an abnormal scanned image. Try scanning without
setting auto-detection of the paper size.